APW8723

APW8723 5V to 12V Single Buck Voltage Mode PWM Controller Features Wide 5V to 12V Supply Voltage Power-On-Reset Monitoring on VCC Excellent Output Voltage Regulations - 0.8V Internal Reference - ±1% Over Temperature Range General Description The APW8723 is a voltage mode, fixed 300kHz switching frequency, synchronous buck converter. The APW8723 allows wide input voltage that is either a single 5V~12V or two supply voltage(s) for various applications. The power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A built-in soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.8V temperature-compensated reference voltage with high accuracy is designed to meet the requirement of low output voltage applications. The APW8723 provides excellent output voltage regulations against load current variation. APW8723 is built in reference voltage offset function for applications that require adjusting supply voltage. The controller’ s over-current protection monitors the output current by using the voltage drop across the RDS(ON) of low-side MOSFET, eliminating the need for a current sensing resistor that features high efficiency and low cost. In addition, the APW8723 also integrates excellent protection functions, The over-voltage protection (OVP) , undervoltage protection (UVP) and over-temperature protection (OTP). OVP circuit which monitors the FB voltage to prevent the PWM output f...